Idk what to call the title

Has anyone ever died by lava randomly in 1.21.7 I was playing in a friend’s realms right I’m in a cave I find diamonds I start to walk up to them then next thing I know I catch on fire there was no lava near me at all i tried using my water bucket I had on me placed it down started putting cobblestone around me from it then I catch on fire again and then died even in the water